Try carob powder instead of Cacao. In my opinion it tastes even better without the downsides. Cacao has theobromine and when I used to eat it it would make my heart flutter and I felt like I was pumped full of adrenaline. Not good. Worse than caffeine for me.

I mix some carob powder with frozen bananas in the blender and it's just like eating chocolate ice cream or pudding.